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TM 10-4930-248-13&P
APPENDIX
I
TORQUE
LIMITS
- continued
BODY SIZE OR OUTSIDE
DIAMETER
OF FASTENER
MIN
TYPE
TENSILE
MATERIAL
STRNGN
2
3
4
5
6
8
10
1/4
1/10
118
1/16
112
5116
3/8
3/4
SAE
74,000
LOW
6
12
20
32
47
69
99
155
0-1-2
PSI
CARBON
STEEL
SAE 3
100,000
MEDIUM
9
17
30
47
69
103
145
234
PSI
CARBON
STEEL
SAE 5
120,000
MEDIUM
10
19
11
-14
78
114
154
217
PSI
CARBON
HEAT
TREAT
STEEL
SAE 6
133,000
MEDIUM
12.5
24
43
69
106
150
209
350
PSI
CARBON
STEEL
QUENCHED
TEMPERED
SAE7
133,000
MEDIUM
13
25
44
71
110
154
215
360
PSI
CARBON
STEEL
I
SAE8
150,OGO
MEDIUM
14
29
41
71
119
169
130
380
PSI
CARBON
ALLOY
STEEL
SOCKET
160,000
HIGH
16
33
54
84
121
180
250
400
HEAD
PSI
CARBON
CAP
CASE
SCREW
HARDENED
STEEL
SOCKET
212,DOO
HIGH
9.
16*
30*
70*
140*
is
29
43
63
100
146
SET
PSI
CARBON
SCREW
CASE
HARDENED
STEEL
MACHINE
60,000
COPPER
2*
3.3*
4.4*
6.4*
8*
16*
20*
65*
110*
17
27
37
49
78
104
SCREW
PSI
(CU) 63%
YELLOW
ZINC
BRASS
(ZU)37%
SILICONE
70,000
COPPER
2.3'*
3.7
4.9
7.2*
10*
19*
22*
70*
125*
20
30
41
53
88
117
BRONZE
PSI
(CUO)
TYPE "B"
9696%
ZINC
(ZNI)2%
SILICON
(SI)2%
TORQUE VALUES: All figures
are foot-pounds
except
those
marked
with and asterisk
(*), which are inch-pounds.
There
is no difference
in the above
chart between
torque
figures
for fine or coarse threads.
The torque
figure
for
finely-threaded
fasteners
as compared
to coarse-threaded
fasteners
of the same diameter
may be slightly
higher.
bu
hardly worth
mentioning.
I-2
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